Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1996-03-07
1997-07-08
Le, Que
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
396114, G01J 120
Patent
active
056463936
ABSTRACT:
A focus detecting apparatus includes a plurality focus detecting zones arranged in a first orientation configuration. A plurality of condenser lenses are disposed behind the zones, each of the condenser lenses corresponding to each of the focus detecting zones. The apparatus further includes plural pairs of separator lenses for splitting images seen through the zones. A sensor unit having multiple line sensors is arranged in a second orientation configuration that differs from the first orientation configuration. The multiple line sensors are disposed on a reimaging plane for reimaging the split images, and each of the line sensors corresponds to each of the multiple focus detecting zones. The apparatus also includes a mechanism for deflecting a bundle of rays, passing through at least one of the plurality focus detecting zones, to be close to another bundle of rays passing through another focus detecting zone while the first configuration orientation is maintained. A mechanism for changing the orientation of the bundles of rays passing through the plural focus detecting zones of the first orientation configuration into the second orientation configuration, is provided and is disposed between the deflecting mechanism and the separator lenses.
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Asahi Kogaku Kogyo Kabushiki Kaisha
Le Que
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